Restructure Docker for Dokploy deployment

- Copy app code into PHP image, sync to shared volume at startup
- Use named volume (app_code) shared between app and nginx
- Build nginx image with embedded config (no bind mounts)
- Add .dockerignore to optimize image build
- Build context moved to project root for both services

docker/php/Dockerfile

@@ -42,14 +42,17 @@ RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
 # Set working directory
 WORKDIR /var/www/html
 
+# Copy application code to staging area
+COPY . /app-src/
+
 # Copy PHP configuration
-COPY php.ini /usr/local/etc/php/conf.d/custom.ini
+COPY docker/php/php.ini /usr/local/etc/php/conf.d/custom.ini
 
 # Copy PHP-FPM pool config
-COPY www.conf /usr/local/etc/php-fpm.d/www.conf
+COPY docker/php/www.conf /usr/local/etc/php-fpm.d/www.conf
 
 # Copy entrypoint
-COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+COPY docker/php/entrypoint.sh /usr/local/bin/entrypoint.sh
 RUN chmod +x /usr/local/bin/entrypoint.sh
 
 EXPOSE 9000